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Well, looking at the map (not updated yet for this morning), the pattern that jumps out is that if there are two or more Cinema HD on a TP, that TP only has 4 channels on it, not 5.

Dunno if that's a recent phenomenon or not.

Would make sense as the Cinema channels are 1080p and would require more bandwidth.

[Disclaimer] The definition of "soon" is based solely on DirecTV's interpretation of the word, and all similarities with dictionary definitions of the word "soon" are purely coincidental and should not be interpreted as a time frame that will come to pass within a reasonable amount of time.

Are they? I know internet downloads can be 1080p, but are the channels?

As far as I know, yes. I don't use PPV much, but they show with a 1080p logo in my guide.

[Disclaimer] The definition of "soon" is based solely on DirecTV's interpretation of the word, and all similarities with dictionary definitions of the word "soon" are purely coincidental and should not be interpreted as a time frame that will come to pass within a reasonable amount of time.

Unless the increase in bandwidth is due to far less compression being applied to the 1080p Cinema PPV programs in the 100-200 ch. # range.

All other things equal, 1080i sending 540 lines at 60 fields/s requires more bandwidth than 1080p at 24 frames/s.

Nope, there are no "lines", MPEG sending base pictures [I] and updates [P,B] to them in format 1920x1080[1088] pixels. No lines ! But FR is 30 FPS for whole picture combined from two and each has have of half of full scan (odd,even) as inheritance of old analog TV standard/equipment.

Nope, there are no "lines", MPEG sending base pictures [I] and updates [P,B] to them in format 1920x1080[1088] pixels. No lines ! But FR is 30 FPS for whole picture combined from two and each has have of half of full scan (odd,even) as inheritance of old analog TV standard/equipment.

Oh I didn't mean it was exactly conveyed in that way (line by line) in an encoded MPEG stream.

But from beginning to end 540 lines@60 fields/s from source to display must be sent for 1080i vs. 1080 lines@24 frames/s for 1080p regardless of the precise way its formated at some point in between.

I think the bandwidth between 1080i & 1080p/24 turns out to be about the same, due to the change in frame rate.

Exactly, 1080i/60 is 60 540x1920 fields per second, which the display deinterlaces to 30 1080x1920 fields per second. 1080p/24 is 24 1080x1920 fields per second, or actually slightly LESS data than 1080i/60.

As far as I know, yes. I don't use PPV much, but they show with a 1080p logo in my guide.

Ah, you are correct. We sometimes watch PPV, but only the pre-downloads or internet downloads, never the PPV numbered channels. But now that you point it out to me, I see it in the guide that way as well. Tho as Titan25 points out, if it is 1080p24, then it is actually somewhat less bandwidth than 1080i, all things being equal (i.e. compressability and encoder efficiency for the content).

[Disclaimer] The definition of "soon" is based solely on DirecTV's interpretation of the word, and all similarities with dictionary definitions of the word "soon" are purely coincidental and should not be interpreted as a time frame that will come to pass within a reasonable amount of time.

Since they're already doing as many as 9 channels on Ka spotbeams today, I have no doubt.

OTOH, P. Smith;

After some thought, if the Ka CONUS channels must use only QPSK modulation for greater signal robustness due to their lower PFD, and the Ka spotbeams that have as many as 9 channels mainly accomplish this by using using 8-PSK (so "more bits per baud") permitted by their higher PFD, maybe we won't see anymore than 6 channels per transponder for the CONUS beam channels at least.

After some thought, if the Ka CONUS channels must use only QPSK modulation for greater signal robustness due to their lower PFD, and the Ka spotbeams that have as many as 9 channels mainly accomplish this by using using 8-PSK (so "more bits per baud") permitted by their higher PFD, maybe we won't see anymore than 6 channels per transponder for the CONUS beam channels at least.

That's what I thought too. Always wanted them to try 8-psk on Ka conus, but then I'm reminded how that may not be a good idea when it storms bad and I have rain fade.

After some thought, if the Ka CONUS channels must use only QPSK modulation for greater signal robustness due to their lower PFD, and the Ka spotbeams that have as many as 9 channels mainly accomplish this by using using 8-PSK (so "more bits per baud") permitted by their higher PFD, maybe we won't see anymore than 6 channels per transponder for the CONUS beam channels at least.

Actually, P. Smith posted that Portland's 9 locals from one tpn are using the same modulation as CONUS, just using a different FEC.

QPSK 4/5 for spot vs. QPSK 2/3 for CONUS.

Perhaps it may be possible to reduce the FEC a little to gain bit rate on CONUS beams?